<template>
  <div class="child2">
    <h2>我是子组件2：曹丕</h2>
    <button @click="handler">点击我给兄弟送一台法拉利</button>
  </div>
</template>

<script setup lang="ts">
// 引入$bus对象
import $bus from '../../bus';
const handler = ()=>{
  $bus.emit('car', {car: '法拉利'})
}
</script>
<style scoped lang="less">
.child2 {
  width: 300px;
  height: 300px;
  background: skyblue;
}
</style>